Add a tbsp of butter to pan and when it melts and becomes hot, add cashew nut and sauté till they are golden brown. Switch off and add raisin; keep aside

Grease a pan with melted butter/ghee and keep aside

In a mixing bowl add custard powder, water, saffron,sugar, salt and cardamom powder; mix well without any lumps

Take a heavy bottomed pan (I used non-stick) and transfer the mixture to the pan. Keep the pan on the stove and start cooking in high flame

The mixture will come to boil and start to thicken, Keep stirring till it became glossy and jelly like texture

Add remaining butter, cashew nuts and raisin; mix well and reduce the flame. Keep stirring continuously till the mixture begins pulling away from the sides

Transfer the halwa to the greased pan and level the top. Chill it for an hour and cut them

Check out my other custard powder recipe,Custard Powder Cookies